etc-profile

cat > /etc/profile <<'EOF'
# /etc/profile

# System wide environment and startup programs, for login setup
# (look for functions and aliases in /etc/bashrc)

##
## ferreira.mv@gmail.com:
##
##   /etc/profile does only the following:
##     - environment variables: PATH, USER, MAIL, HOSTNAME, etc...
##     - source other scripts from /etc/profile.d/*.sh
##

# more details: fqdn, full path, and an empty line to type
export PS1='\u@\H:\w\n\$ '
# better trace for 'set -x'
export PS4="+ \${BASH_SOURCE} : \${FUNCNAME[0]:+\${FUNCNAME[0]}()} \${LINENO}> "

# troubleshooting aide:
[ -f /etc/.env-verbose ] && echo "# Inside /etc/profile: [$0]"
[ -f /etc/.env-debug   ] && set -x

# classical stuff:
if [ -x /usr/bin/id ]; then
    if [ -z "$EUID" ]; then
        # ksh workaround
        EUID=`id -u`
        UID=`id -ru`
        GID=`id -rg`
    fi
    USER="`id -un`"
    LOGNAME=$USER
    MAIL="/var/spool/mail/$USER"
fi

HOSTNAME=$( /usr/bin/hostname 2>/dev/null )

HISTSIZE=1000
if [ "$HISTCONTROL" = "ignorespace" ]
then HISTCONTROL=ignoreboth
else HISTCONTROL=ignoredups
fi

# Path is the same for any user
PATH=/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin

export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL

# No core files by default
#ulimit -S -c 0 > /dev/null 2>&1

# environment
umask 002

for f in /etc/profile.d/*.sh
do
  if [ -r "$f" ]
  then
    [ -f /etc/.env-verbose ] && echo "#   /etc/profile: calling  [$f]"
    . "$f" >/dev/null
  else
    [ -f /etc/.env-verbose ] && echo "#   /etc/profile: ignoring [$f]"
  fi
done
unset f

# vim:ts=4:sw=4:ft=sh:

EOF